Cut-off attachment for internal-combustion engines



Aug. 31, 1926; v 1,598,566

L. B. EDWARDS CUT-OFF ATTACHMENT FOR INTERNAL COMBUSTION ENGINES Filed Feb. 25. 1925 |NVENTOR ATTORNEY WITNESS:

Patented Aug. 31, 1926.

UNITED STATE orrica.

are

LAKE BANKS EDWARDS, OF ANNISTQN, ALABAMA.

Application filed. February My invention is a cutoff attachment for internal combustion engines and its principal object is to provide a cutoff which can be readily attached to any exhaust pipe of an internal combustion engine without altering the construction thereof.

A further object of the invention is to provide a device of this character which. can be attached to the exhaust pipe and which will be effective and advantageous in use as a cutoff, and will cooperate with the muffler of the exhaust pipe to entirely muffle the reports therefrom when the cut-off attachment is disposed to normal position.

With the preceding and other objects and advantages in view, the invention consists in the novel construction, combination and arrangement of elements to be hereinafter specifically referred to, claimed and illustrated in the accompanying drawings, in which:

Figure 1 is an elevation of the attachment associated with an internal combustion engine.

Figure 2 is. a view partly in section and partly in elevation of the attachment.

Figure 3 is a fragmentary elevation of the device.

Figure 4 is a modified embodiment of the invention.

Figure 5 is a further modified form.

Referring to the drawing in detail, wherein corresponding characters of reference denote corresponding parts throughout the several views, the numeral 5 designates a conventional internal combustion engine which includes an exhaust manifold 6. My attachment comprises a cylinder 7 having one end threadedly engaged with the discharge end of the exhaust pipe 6 as indicated at 8. Extending laterally from the cylinder 7 is a goose neck 9 which is coupled to a discharge pipe 10 by means of a coupling ring 11 and is restricted at its juncture with the cylinder.

Arranged in the cylinder 7 is a damper or rotatable valve 12 having its ends journaled in the cylinder 7 as indicated at 13. One of such ends terminates in right-angular extensions 14. An ear 15 is provided on 25, 1925. Serial No. 11,578.

inder 7 against which the angular extension normally rests and which serves to hold the valve in a closed position as shown.

Any suitable means may be employed for moving the valve 12 to its operative position.

In Figure 4, a slightly modified construction is illustrated. In this instance the cylinder 7 is connected to the exhaust manifold by means of flanges 17 .formed on the pipe and cylinder respectively. Likewise, the exhaust pipe 10 is secured to the goose neck by means of a similar flange 18.

In Figure 5, another modification is shown. In this instance a bell crank lever 20 is pivoted to an car 21 adjacent one end of the cylinder 7. This bell cranklever is formed with a valve 22 upon one end which normally engages the open end of the cylinder to close the same. A contractile spring 23 has one end connected to the cylinder 7 and its opposite end connected to the bell crank lever and serves to normally hold the valve against the cylinder 7.

While I have shown and described the preferred embodiment of the invention, I desire to have it understood that such changes may be made in the form, construction, arrangement of parts and operations, as will not depart from the spirit of the invention or the scope of the subjoined claim.

WVhat is claimed is The combination with an exhaust manifold of an internal combustion engine, of a cylinder open at one end and having its opposite end secured to the exhaust manifold, a normally spring closed valve arranged in said cylinder, a restricted outlet laterally extending from said cylinder in advance of said valve and being in the form of a goose neck, and a pipe secured to the goose neck and arranged in parallelism with said cylinder.

In testimony whereof I affix my signature.

LAKE BANKS EDl/VARDS. 

